EP1225099B1 - Airbagsystem für Fahrzeuge - Google Patents

Airbagsystem für Fahrzeuge Download PDF

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Publication number
EP1225099B1
EP1225099B1 EP01127982A EP01127982A EP1225099B1 EP 1225099 B1 EP1225099 B1 EP 1225099B1 EP 01127982 A EP01127982 A EP 01127982A EP 01127982 A EP01127982 A EP 01127982A EP 1225099 B1 EP1225099 B1 EP 1225099B1
Authority
EP
European Patent Office
Prior art keywords
airbag
chamber
chambers
triggering
vehicle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP01127982A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1225099A1 (de
Inventor
Kurt Haeuslmeier
Gisela Diepold
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP1225099A1 publication Critical patent/EP1225099A1/de
Application granted granted Critical
Publication of EP1225099B1 publication Critical patent/EP1225099B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/015—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting the presence or position of passengers, passenger seats or child seats, and the related safety parameters therefor, e.g. speed or timing of airbag inflation in relation to occupant position or seat belt use
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R2021/01204—Actuation parameters of safety arrangents
    • B60R2021/01211—Expansion of air bags
    • B60R2021/01225—Expansion of air bags control of expansion volume
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R2021/01204—Actuation parameters of safety arrangents
    • B60R2021/01211—Expansion of air bags
    • B60R2021/01231—Expansion of air bags control of expansion timing or sequence
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
    • B60R21/263—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using a variable source, e.g. plural stage or controlled output
    • B60R2021/2633—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using a variable source, e.g. plural stage or controlled output with a plurality of inflation levels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
    • B60R21/264—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous generation of gas, e.g. pyrotechnic
    • B60R21/2644—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous generation of gas, e.g. pyrotechnic using only solid reacting substances, e.g. pellets, powder
    • B60R2021/2648—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous generation of gas, e.g. pyrotechnic using only solid reacting substances, e.g. pellets, powder comprising a plurality of combustion chambers or sub-chambers

Definitions

  • the invention relates to an airbag system for vehicles with an airbag and a trigger assembly, which in one as the impact on an obstacle to be interpreted event filled the airbag with gas, the release arrangement two having independently triggerable chambers whose each one is able to fill the airbag and the first chamber is able to fill the airbag Airbag is able to fill more than the other, second Chamber, wherein after triggering the first chamber, the second Chamber is triggered with a time delay.
  • Airbag systems for protecting the occupants of a motor vehicle Accidents are now standard. Usually will by means of a provided on the vehicle frame Acceleration sensor detects whether one as an impact on a Obstacle to interpret abrupt delay of the Vehicle occurs. In the given case will be one collapsed airbag by triggering or igniting a Propellant charged in a split second with gas to the To catch the occupant's body and thus prevent it to preserve lasting injuries. Such airbag systems have proven themselves. At least in vehicles of the upscale Mid-range are already two-stage airbag systems provided, in which the trigger arrangement two chambers which has an asymmetric distribution of the respective Possess propellant charge.
  • the first chamber with to provide a smaller propellant than the second chamber (DE195510980A1, EP0958974A2). This is disadvantageous, however, if the occupant is in the average or standard position.
  • Each of the chambers has one Gas generating device and an ignition device on.
  • An electronic control unit ECU monitors multiple sensors using a Acceleration sensor, a temperature sensor for the driver, one Temperature sensor for the passenger, a buckle sensor for the driver, a front passenger seat belt sensor, a "no-longer-on-the-seat” sensor for the driver, a "no-longer-on-the-seat” sensor for the front passenger and an optional seat occupancy sensor for the passenger are provided.
  • the ECU identifies, as at a block 406 displayed, the severity or nature of the collision. Then determined the ECU, whether the primers of both chambers in a predetermined time Sequence can be activated or only one of the two primers is activated.
  • the invention benefits from the fact that already now in vehicles of Upper class and the upper middle class numerous person-specific Sizes, but also special accident-specific variables using sensors such as seating position, weight, height, restraint belt locking position, etc ..
  • Typical accident-specific variables are the actual speed of the vehicle and the relative speed of the vehicle Vehicle opposite a preceding vehicle, as well as the nature of Crash course.
  • the drawing shows schematically the triggering arrangement 2 of a Airbag System 1.
  • the airbag system 1 has in the usual way a folded airbag, not shown in a vehicle-side, indicated by dashed lines housing 3 on.
  • a trip unit 4 is attached, the two separate chambers 5 and 6 for a contains respective propellant charge.
  • the first chamber 5 is over a first ignition set 7 triggerable or ignitable, and the second Chamber 6 is independent of a second ignition set 8 an ignition of the first chamber 5 can be triggered.
  • Each of the Chambers 5, 6 has respective exhaust openings 9 and 10, respectively.
  • a trigger controller 11 does not receive one illustrated, attached to the vehicle frame Acceleration sensor an acceleration signal 12, compares this with one in the controller 11 stored threshold and interpreted at Exceeding the threshold that this Acceleration signal 12 causing event as Impact, which is a rapid filling of the airbag with gas Igniting the propellant charges in the chambers 5 and 6 triggers. Of the Threshold is calculated so that at a Emergency braking the airbag is not yet filled.
  • the trigger control 11 gives a first Ignition signal to the chamber with the larger propellant charge, here the first chamber 5, associated Zündsatz, here the first ignition set 7, off and a time delay to an ignition signal to the second ignition charge 8 for the propellant charge smaller Quantities in the second chamber 6, causing the airbag two-stage, first with the higher gas content and in the Final phase is filled with the smaller proportion of gas.
  • the Supply of the ignition signals to the ignition sets 7 and 8 is schematically represented by a bus system 13.
  • Dashed lines 14 are further shown that further Restraint systems such as belt tensioners, side airbags and The like in the same way from the trigger control 11th can be controlled in the given case.
  • the vehicle also includes other sensors (not in the individual presented), the person-specific sizes of the Occupants or the respective seats detected as the Adjusting a seat for the sitting position and thus
  • the type of person is characteristic, so whether the occupant large or is small, a weight signal, so whether the person difficult or easy, in particular, whether the seat of a person is occupied, and the like person-specific sizes.
  • a corresponding signal 15 is the trigger control 11 fed substantially.
  • the trigger controller 1 may be on Signal 16 are supplied, which detects the crash angle, ie that of a specified axis, generally the Longitudinal axis of the vehicle, deviating direction of the Main component of the impact force. Further it is also appropriate the actual speed of the Vehicle, the relative speed of the vehicle towards an object in front of the vehicle, in general a preceding vehicle, to capture and to supply appropriate signals to the tripping controller 11. Further, the triggering controller 11 becomes specific sizes supplied with respect to the vehicle type or they are in this is stored as if by a type signal 17 indicated. These the trigger control 11 supplied accident-specific sizes and person-specific sizes are taking into account the vehicle type in the Trigger control 11 evaluated.
  • the airbag Due to the evaluation not only, as is well known, the time offset between the ignition of the two Zünd accounts 7 and 8 variable but it is also determined whether there is a special accident situation involving the Protection of the occupant would be more convenient, the airbag first with the smaller proportion of gas and only with time lag then fill with the higher gas content. in the given case, the corresponding signals to the Firing sets 7 and 8 are given in inverted order, so that first the propellant charge in the second chamber. 6 is ignited and only with a corresponding time offset the larger propellant charge in the first chamber. 5

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)
EP01127982A 2001-01-20 2001-11-24 Airbagsystem für Fahrzeuge Expired - Lifetime EP1225099B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10102646A DE10102646A1 (de) 2001-01-20 2001-01-20 Airbagsystem für Fahrzeuge
DE10102646 2001-01-20

Publications (2)

Publication Number Publication Date
EP1225099A1 EP1225099A1 (de) 2002-07-24
EP1225099B1 true EP1225099B1 (de) 2005-05-25

Family

ID=7671288

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01127982A Expired - Lifetime EP1225099B1 (de) 2001-01-20 2001-11-24 Airbagsystem für Fahrzeuge

Country Status (5)

Country Link
US (1) US6913284B2 (ja)
EP (1) EP1225099B1 (ja)
JP (1) JP2002234414A (ja)
DE (2) DE10102646A1 (ja)
ES (1) ES2240312T3 (ja)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10246800A1 (de) * 2002-10-08 2004-04-22 Robert Bosch Gmbh Vorrichtung und Ansteuerung eines Rückhaltesystems
DE10257850A1 (de) * 2002-12-11 2004-06-24 Volkswagen Ag Gasgenerator für ein Airbagmodul
US7204512B2 (en) * 2004-01-28 2007-04-17 Automotive Systems Laboratory, Inc. Multi-stage inflator with sympathetic ignition enhancement device
DE102004023973B3 (de) * 2004-05-14 2005-09-22 Bayerische Motoren Werke Ag Rückhaltesystem
US7275760B2 (en) * 2004-07-23 2007-10-02 Automotive Systems Laboratory, Inc. Multi-chamber gas generating system
KR100863633B1 (ko) 2006-10-31 2008-10-15 현대자동차주식회사 차량용 에어백의 복합뇌관 장치 및 그 제어방법
DE102007018645B4 (de) * 2007-04-19 2012-06-14 Autoliv Development Ab Airbagsystem und Verfahren zum Betrieb eines Airbagsystems
KR100970695B1 (ko) 2008-05-21 2010-07-16 아우토리브 디벨롭먼트 아베 2단 전개식 에어백용 인플레이터의 점화제어 장치 및 방법
US8282127B1 (en) * 2008-09-03 2012-10-09 Tk Holdings, Inc. Gas generating system
JP2014209086A (ja) * 2013-03-25 2014-11-06 株式会社デンソー 衝撃検出装置
DE102014004570B4 (de) 2014-03-28 2018-10-31 Audi Ag Insassenschutzvorrichtung für ein Fahrzeug
JP6424796B2 (ja) * 2015-11-02 2018-11-21 トヨタ自動車株式会社 車両用エアバッグ装置
JP6618041B2 (ja) * 2016-08-29 2019-12-11 豊田合成株式会社 助手席用エアバッグ装置
JP6698047B2 (ja) * 2017-03-31 2020-05-27 株式会社Ｓｕｂａｒｕ エアバッグ装置

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5330226A (en) * 1992-12-04 1994-07-19 Trw Vehicle Safety Systems Inc. Method and apparatus for detecting an out of position occupant
US5411289A (en) * 1993-10-29 1995-05-02 Morton International, Inc. Air bag system for a motor vehicle
US5626359A (en) * 1993-12-02 1997-05-06 Trw Vehicle Safety Systems, Inc. Method and apparatus for controlling an actuatable restraining device in response to discrete control zones
US5460405A (en) * 1994-06-28 1995-10-24 Trw Vehicle Safety Systems Inc. Apparatus for inflating an inflatable vehicle occupant restraint
US5564743A (en) * 1995-03-22 1996-10-15 Morton International, Inc. Multiple stage air bag inflator system
US5582428A (en) * 1996-02-28 1996-12-10 Morton International, Inc. Hybrid adaptive inflator for airbags
JP3833753B2 (ja) * 1996-10-15 2006-10-18 ダイセル化学工業株式会社 エアバッグ用ガス発生器
US6056079A (en) * 1996-12-19 2000-05-02 Automotive Systems Laboratory, Inc. Automotive seat weight sensing system
US5934705A (en) * 1997-03-06 1999-08-10 Automotive Systems Laboratory, Inc. Two chamber inflator body
FR2763548B1 (fr) * 1997-05-23 1999-06-18 Livbag Snc Generateur pyrotechnique de gaz adaptatif a chambres tubulaires pour coussin de protection
JP3704908B2 (ja) * 1997-09-08 2005-10-12 タカタ株式会社 乗員保護装置
US6659500B2 (en) * 2000-05-11 2003-12-09 Automotive Systems Laboratory, Inc. Multi-chamber inflator

Also Published As

Publication number Publication date
US20020113421A1 (en) 2002-08-22
US6913284B2 (en) 2005-07-05
DE10102646A1 (de) 2002-08-29
EP1225099A1 (de) 2002-07-24
JP2002234414A (ja) 2002-08-20
ES2240312T3 (es) 2005-10-16
DE50106306D1 (de) 2005-06-30

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